(USA) Northwestern University - Center for Mathematical Studies in Economics and Management Science (CMSEMS). Information, faculty and staff, discussion papers, theory workshop, bag lunch seminar. - http://www.kellogg.northwestern.edu/research/math/
(UK) University of Oxford - Nomura Centre for Quantitative Finance, Oxford Centre for Industrial and Applied Mathematics, Mathematical Institute. People, events. - http://www.maths.ox.ac.uk/ociam/ncqf/
(Germany) Universitaet Freiburg - Centre for data analysis and modelling (FDM). - http://www.fdm.uni-freiburg.de/index_en.php
(Switzerland) Geneva Research Collaboration - The objective of the collaboration is to establish an international, open, and creative research framework for developing new mathematical and physical models in social science. The site is oriented towards stimulating innovative trends in modern science - http://www.genevaresearch.org/
(USA) Carnegie Mellon University - Center for Computational Finance. General information about the Center and its activities; downloadable technical reports; MSCF and Ph.D. student resumés. - http://www.math.cmu.edu/~ccf/
(Denmark) University of Aarhus - Centre for Analytical Finance. Research in both theoretical and applied finance in Denmark. - http://www.caf.dk/